Here is the full list of all 51 EARTH DEFENSE FORCE 4.1 The Shadow of New Despair achievements.
Cleared all stages on Hard difficulty as a Fencer.
Cleared all stages on Hard difficulty as a Wing Diver.
Destroyed 12 quadruped fortresses.
Destroyed 5000 flying drones.
Cleared all stages on Hard difficulty as a Ranger.
Destroyed 30 Erginuses.
Destroyed 200 large transport ships.
Cleared all stages on Hard difficulty as an Air Raider.
Defeated 12,000 spider-type bugs.
Destroyed 6 Brains.
Destroyed 6 motherships.
Defeated 360 Retiarii.
Destroyed 900 Hectors.
Cleared all stages on Normal difficulty as a Ranger.
Defeated 4000 flying-type bugs.
Defeated 20,000 ant-type bugs.
Defeated 40 king spiders.
Cleared all stages on Normal difficulty as an Air Raider.
Destroyed 2000 flying vehicles.
Defeated 200 Deroys.
Defeated 24 death queens.
Cleared all stages on Normal difficulty as a Fencer.
Defeated 2400 Dragons.
Defeated 120 shield bearers.
Defeated 24 queens.
Destroyed 6 flying-type bug nests.
Obtained 50% of all available weapons.
Air Raider's health has reached 1000.
Ranger's health has reached 1000.
Destroyed 200 underground tunnel exits.
Fencer's health has reached 1250.
Cleared all stages on Normal difficulty as a Wing Diver.
Rescued 50 other players in co-op play.
Wing Diver's health has reached 550.
Reached a height of 200 meters.
Obtained 10% of all available weapons.
Healed another player in co-op play.
Rescued 5 other players in co-op play.
Cleared all stages on Hardest difficulty as a Ranger.
Cleared all stages on Inferno difficulty as a Ranger.
Cleared all stages on Hardest difficulty as a Wing Diver.
Cleared all stages on Inferno difficulty as a Wing Diver.
Cleared all stages on Hardest difficulty as an Air Raider.
Cleared all stages on Inferno difficulty as an Air Raider.
Cleared all stages on Hardest difficulty as a Fencer.
Cleared all stages on Inferno difficulty as a Fencer.
Obtained all available weapons.
Destroyed 500 carriers.
Destroyed 150 red drones.
Defeated 20 Greater Wild Dragons.
Destroyed 20 Argos.